PEN # 18 - Occupational Exposure Limits Table


Ontario’s Current and Proposed Occupational Exposure Limits*

* Table has been adapted from the Ontario Ministry of Labour’s website

TWAEV: Time-Weighted Average Exposure Value (maximum allowable average concentration calculated for an 8-hr. day)
STEV: Short-Term Exposure Value (maximum allowable average concentration calculated for any 15-minute period)
CEV: Ceiling Exposure Value (maximum allowable concentration at any time)
Skin: Skin notation has been assigned mg/m3: milligrams per cubic meter ppm: parts per million
f/cc: fibres per cubic centimetre


Ontario's Proposed Occupational Exposure Limits


Return to: PEN # 18 - Prepare for New Occupational Exposure Limits